Make all dungeons available in dungeon finder

[Luaidh]

It would be a great improvement on leveling and playing with guildies together if most of the older dungeons were available in the dungeon finder. These instances (i.e. gnomeregan) are not disabled, but they are not available in RDF. Please consider making them available so you don't have to grind the same instances together or have 3 ppl travel for hours to be able to play another dungeon, but without RDF additional rewards.